package command.garageDoor;import command.Command;/** * Created by Administrator on 2018-10-24. */public class GarageDoorDownCommand implements Command {    GarageDoor garageDoor;    public GarageDoorDownCommand(GarageDoor garageDoor){       this.garageDoor = garageDoor;    }    public void execute() {       garageDoor.down();    }    public void Undo() {       garageDoor.lightOn();    }}